PNEUMATIC SUBMARINE GUN Russian patent published in 2009 - IPC F41B11/08 

FIELD: weapon.

SUBSTANCE: invention concerns sports gear for submarine hunting. Gun includes barrel with nose plug and sealing, harpoon with diametre less than barrel diametre, handle, trigger and three-diametre plug communicating with sealing and harpoon. Lesser plug diametre communicates with groove in rear harpoon part, medium diametre is equal to harpoon diametre, and maximum diametre exceeds harpoon diametre but is less than barrel diametre. By shooting, harpoon interacts with plug so as friction force between harpoon and plug part of smallest diametre exceeds inertia force affecting plug, and plug part with medium diametre blocks sear travel in harpoon direction in discharged gun without harpoon.

EFFECT: enhanced accuracy, noiselessness and safety of shooting.

13 cl, 4 dwg